It is as accurate as date is given. Main discrepancy is the port as the tuning frequency of the enclosure depends on the port parameters, like the flare or the corners amd edges of the port.
This is a very rudimentary box design program. You are very limited on what you can do. You can get a basic idea of what you need but if you're looking for precision, look elsewhere.
@@RAW-CAtGood idea to make the height and depth the same dimensions. I just added the two dimensions the program calculated and divided by two which have a dimension of both height and depth of 390.25. May not be the right way, but should be pretty accurate. Cheers!!!!
